Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2007-09-13
2009-11-24
Kim, Ellen (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling structure
C385S123000
Reexamination Certificate
active
07623745
ABSTRACT:
The present invention provides an apparatus for propagating electromagnetic radiation of a selected vacuum wavelength beyond the diffraction limit. The apparatus comprises a waveguide core and a cladding disposed about the core. The waveguide core may include a material with an anisotropic dielectric permittivity, with the optical axis of the material primarily aligned with direction of light propagation. In addition, the waveguide core may have a cross-sectional dimension smaller than about ½ of the selected wavelength at least at one portion of the waveguide core. The cross-sectional dimension of the waveguide core may decrease along the length of the waveguide core creating a taper to provide a photonic funnel. The waveguide core may comprise a homogeneous anisotropic material, anisotropic metamaterial, or a photonic crystal.
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Govyadinov Alexander A.
Podolskiy Viktor A.
Dann Dorfman Herrell & Skillman, PC
Haun Niels
Kim Ellen
The State of Oregon Acting By and through the State Board at Hig
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